Apparatus for casting engine cylinders



Dec. 1,1925. 1,563,717

A. T. BROWN APPARATUS Fox CASTING ENGINE cYLINnEns Filed Dec. 28, 1923 3 Shets-Sheet 1 l l 4/ l /9 \\\\\\\\\\y7/4////1f//f 1,? ZZ f r /2 /L VV' r1 0 'I/ VQZW@ n A TTORNE Y.

- A. T. BROWN u APPARATUS FOR CASTING ENGINE CYLINDERS Filed Dec. 28, 1923 s sheets-sheet 2 A TT ORNE Y.

INVENToR. Y

/Zglf Dec. 1,1925. 1,563,717

- A. T. BROWN APPARATUS FOR CASTING ENGINE CYLINDERS Filed Dec. 28, 1925 3 Sheets-Sheet 3 ATTORNEY.4

Patented Dee. 1, 1925.

UNITED STATES ALEXANDER T. BROWN, OF SYRACUSE, NET` YORK.

APPARATUS FOR CASTING ENGINE CYLINDERS.

Application led December 28, 1923.

To all fur/0m it may concern.'

Be it known that I, ALEXANDER T. BROWN, a citizen of the United States, and a resident Syracuse, in the county of Onondaga and State of New York, have invented a certain new and useful Apparatus i'or Casting Engine Cylinders, of which the following is a specification.

This invention has for its object an apparatus for casting cylinders of air-cooled internal combustion engines and particularly cylinders having lengthwise heat radiating flanges integral with the cylinder wall, the cylinder head and ports formed integral f with the head, the lengthwise heat radiating flanges being surrounded by a jacketintegral therewith, which apparatus is particularly simple in its construction and assembly, and highly ei'iicient in use and which produces economically a highly efiicient aircooled cylinder.

The invention consists in the novel ifeatures and in the combinations and the constructions hereinafter set forth and claimed.

In describing this invention, reference is had to the accompanying drawings in which like characters designate corresponding parts in all the views.

Figure 1 is an elevation of one section of the boX or mold of this apparatus, the ring for holding the entrance block through which metal is poured, being shown in section.

Figure 2 is an end elevation of the mold box.

Figure 3 is a view similar to Fig. 1, the cores and other parts being omitted.

Figure t is a plan view of the parts seen in Fig. 3.

Figure 5 is a i'ace view of one of the sections oi the main core.

Figure 6 is an end view thereof.

Figures 7 and 8 are respectvely an elevation and an end View oi a semi-circular series oi annular cores for forming the heat radiating flanges.

Figures 9, 10 and 11, are respectively a longitudinal edge View, a side elevation and an end view, oi one 0i the cores of the annular series.

This apparatus comprises a body or box formed with a cylindrical cavity and with port forming cavities at one end of the cylindrical cavity, a main core arranged in the cylindrical cavity and spaced apart from the cylindrical wall thereof, and being also Serial No. 683,164.

spaced apart from one end of the cylindrical cavity and having port forming extensions at such end arranged in the corresponding cavities ot the box and an annular series ot' cores around a portion of the main core and spaced apart ifroin the cylindrical wall ot the box cavity and the central core to forni heat radiating iianges and a jacket integral with the cylinder wall, the boX and the main core being preferably divided longitudinally along a diametrical plane of the cylindrical cavity. y

1 designates one ot the sections of the box, the other section being substantially a duplicate oi the section 1.

is a semi-cylindrical cavity -formed in the section 1, the other sectionbeing formed with a similar cavity and these two cavities forming a complete cylindrical cavity, an end portion 3 of the cavity 2 lbeing of greater diameter than the. remaining portion are port forming cavities arranged at one end of the larger portion 3 of the cavity 2. 6 is one of thcvsections oi' the main core, it being generally semi-cylindrical in form and, in addition, including another section, which iS a duplicate of the section 6, so that the main core is also divided along a diametrical plane. The core 6 in addition includes port forming extensions 7 at one end complemental to the cavities 5 and being spaced apart from the walls of such cavities 5. These extensions are also Jformed with elongations 8, or core prints which lit into grooves 9, in the box sections and support one end of the main core in the mold cavity. This mold cavity is further formed with cavities 10` extending from the port forming cavities 5 in order to form bosses which are ultimately bored out to lorm guides for valve stems.

The core sections 6 are further formed with an annular flange 11 at its end remote to that 'formed with the extensions 7 and the flanges 11 of the sections fit into a countersunk recess 12 in the box sections l and serve to support the adjacent ends of the main core 6.

13 is an annular series of cores or core sections arranged in the larger part 3 of the mold cavity, these cores 13 being spaced apart in order1 to form radial flanges on the cylinders and being also spaced apart from the core 6 and from the cylindrical wall of the cavity 3, in order that such flanges may be formed integral with the cylinder Wall The annular flange 11 is forined with passages-1S therethrough, inline with the mold cavity. A sectional entrance' Cappie'ee 19 is mounted on the upper end of the box and is formed with passagesQO therethrough conimunicating with the passagesV 18. This cap piece' 19 is held together by a ring 21. The sections 1 of the box are held together in any suitable manner.

Inoperation, half of the annular vseriesoi` cores13 is placed in vone' section of the box, the other halt 1n the other section, the core sections 6 are thenplace'd in the'respeetive sections 'oi the box, the box sections and enspaced-apart fro'int'he walls of such cavities,

trance piece assembled and the metal poured through-the passages 2() and`18.

Owing to the arrangement of the inold' cavity and cores', a cylinder is formed having an integral head, integral ports' projeeting from thehead, integral heat radiating flanges surrounded by an integral jacket and` themetal of ytheentire structure 1s substan-- tially ho1'nogenous,1`so that fthe eynnder including the head rapidly radiates the heat generated 'during the y'use "of the engine and the cylinders can be cooled rapidly and ef-V fectively by anl air current passing-rover "the v head andthrough the j aokets.

`ity, the box being' dividedlongitudinally into two sections, a core composed of two lengthwise sections located in -the spaces of' the box divisionsbrespeotively, and spacedapart from the wall of the cavity, the'core being also lspaced fromthe end wall of the cavity, and `having outwardly and laterally extending portions for -orniing the cylinder head v4'and porte-carried bythe head, such projections beingf arranged in corresponding cavities 'forined in thev bo'X- divisions and and an annular series of'oores arranged in 'the cylindrical cavity, andspaced-'apart from theiioriner `core, eachof-the "annular series otl cores having-.headset their ends-'for engagingthe adjacent core, the portions of the cores between such heads being spaced-apart to forin'radiallange forming spaces.-v

In testimony whereo, l have hereunto signedIiny nanie, kat Syracuse, in the vcounty of Onondaga, and-:StateV of New York, this 12th day of`Deo."1923.

ALEXANDER 1T. BROWN. 

